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Diffstat (limited to 'test/files/specialized/spec-absfun.scala')
-rw-r--r-- | test/files/specialized/spec-absfun.scala | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/test/files/specialized/spec-absfun.scala b/test/files/specialized/spec-absfun.scala new file mode 100644 index 0000000000..57b54235c9 --- /dev/null +++ b/test/files/specialized/spec-absfun.scala @@ -0,0 +1,44 @@ + +/** Test inheritance. See #3085. + * Anonymous functions extend AbstractFunction1[SpecializedPair[Int], Unit]. The + * specialized type SpecializedPair$mcI$sp should not leak into the superclass because + * the definition of apply would vary covariantly, and erasure won't consider it an + * override of the abstract apply, leading to an AbstractMethodError at runtime. + */ + +object Test { + + private val Max = 1000 + + def main(args: Array[String]) { + notSpecialized() + specialized() + println(runtime.BoxesRunTime.integerBoxCount) + } + + def notSpecialized() { + val pairs = for { i <- 1 to Max; j <- 1 to i } yield new Pair(i, j) + val time0 = System.nanoTime + pairs foreach { p => p.first * p.second } + val time1 = System.nanoTime +// println(time1 - time0) + } + + def specialized() { + val pairs = for { i <- 1 to Max; j <- 1 to i } yield new SpecializedPair(i, j) + val time0 = System.nanoTime + pairs foreach { p => p.first * p.second } + val time1 = System.nanoTime +// println(time1 - time0) + } +} + +class Pair[A](_first: A, _second: A) { + def first = _first + def second = _second +} + +class SpecializedPair[@specialized(Int) A](_first: A, _second: A) { + def first = _first + def second = _second +} |